CN203518495U

CN203518495U - Brown coal drying machine

Info

Publication number: CN203518495U
Application number: CN201320428780.0U
Authority: CN
Inventors: 马雪明
Original assignee: SUZHOU SELF-FORCED CHEMICAL EQUIPMENT Co Ltd
Current assignee: SUZHOU SELF-FORCED CHEMICAL EQUIPMENT Co Ltd
Priority date: 2013-07-13
Filing date: 2013-07-13
Publication date: 2014-04-02
Anticipated expiration: 2023-07-13

Abstract

The utility model discloses a brown coal drying machine which comprises a primary main drying machine body and a secondary main drying machine body. Shafts are arranged on the p primary main drying machine body and the secondary main drying machine body respectively, spiral heat transfer sheets used for heat transferring and conveying are arranged on the shafts, feed ports and discharge ports are respectively formed in the primary main drying machine body and the secondary main drying machine body, and the discharge port in the primary main drying machine body is connected with the feed port in the secondary main drying machine body. The shafts and the spiral heat transfer sheets are all in direct contact with brown coal with heat, heat carriers directly enter a machine body clamping sleeve and a rotary hollow shaft, the heat transfer area per unit is large, and heat transfer efficiency is high.

Description

Brown coal drying machine

Technical field

The utility model relates to a kind of brown coal drying machine.

Background technology

Brown coal are a kind of brownish black, lacklustre grizzles between peat and pitch coal, are characterized in that water content is large, fugitive constituent is high, burning-point low (120 ℃～160 ℃).

Brown coal are the same with other coal source, and exploitation out all will be passed through washing later, selects the brown coal of high-quality, and the accessory substance of washing is not easy to utilize equally.Effective method is by coal slime dewatering, utilizes coal slurry drying-machine, brown coal dryer that the wet coal slime dewatering of raw material is dry, improves efficiency of combustion, and coal resources are utilized more fully.Yet brown coal drying machine in the market can not reach desirable drying effect, all exists output few, dry and do, fluctuation of service, the problem of easily catching fire or exploding.

Utility model content

For overcoming the defect of prior art, the purpose of this utility model is to provide a kind of improved brown coal drying machine.

For realizing above-mentioned target, the utility model adopts following technical scheme: brown coal drying machine comprises one-level drier host machine and secondary drying machine host, axle is housed respectively on firsts and seconds drier host machine, spiral heat transfer sheet for conducting heat and carrying is housed on axle, on firsts and seconds drier host machine, be respectively equipped with charging aperture and discharging opening, the discharging opening on one-level drier host machine is connected with the charging aperture on secondary drying machine host.

Brown coal drying facility of the present utility model have following beneficial effect:

1. occupation area of equipment is little, energy consumption is low

2. separate unit maximum throughput: be 30 ram the loose soil with a stone-roller after sowing/h (exceeding three times than the efficiency of other drying equipments)

3. spontaneous combustion-control temperature

Dust few-intercept explosion phenomenon

5. handling good

6. complete equipment and technology arrangement are simple

Accompanying drawing explanation

Fig. 1 is the schematic diagram of brown coal drying machine of the present utility model.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is done to concrete introduction.

As shown in Figure 1, brown coal drying machine of the present utility model comprises one-level drier host machine 10 and secondary drying machine host 20.Each drier host machine is comprised of critical pieces such as housing, top cover, end caps, and housing comprises inner bag, chuck, insulation in housing, top cover adopt, and cylinder lining and top cover, according to the difference of dried material, adopt different inner lining materials and anti-corrosion measure.

On one-level drier host machine 10 and secondary drying machine host 20, axle 30 is housed respectively, axle 30 is through one-level drier host machine 10 and secondary drying machine host 20, is positioned in the part of drier host machine 10,20 spiral heat transfer sheet 31 is housed on axle 30.Spiral heat transfer sheet 31 is welded on axle 30, and its effect is conduct heat and carry.One end of axle 30 is supported by bearing block 40, and the other end drives rotation by motor 50 by reduction gearing mechanism, and transmission mechanism adopts frequency control to control material handling amount.

On one-level drier host machine 10 and secondary drying machine host 20, be respectively equipped with charging aperture 60, discharging opening 70, weep hole 80, steam inlet 91, and condensation-water drain 92.The discharging opening 70 of one-level drier host machine 10 is connected with the charging aperture 60 of secondary drying machine host 20.Charging is delivered to brown coal drying machine entrance by batcher by material, because drying equipment needs blower fan, pumps the humid air in body, and charging aperture needs good sealing.Discharging opening 70 connects conveying worm the brown coal that have been dried is sent.Steam enters in minute drum by main steam range (its flow can be controlled by flowmeter), by a minute drum, is separated, and passes into respectively in the axle of drying machines at different levels and flight, interlayer, and steam condensate is discharged by steam trap connection.The steam pipework of turnover drying machine must be by chuck steam inlet pipe, sharf steam inlet pipe separately, and every steam inlet pipe must fill the throttle flow size that control valve is controlled each pipeline; The corresponding independent configuration of the drain valve of outlet pipe end and steam inlet pipe, the outlet water at tail end mouth of each admission pipeline configures independent drain valve.Heating steam pressure is 0.4～0.5MPa, temperature while being 180 ℃-210 ℃, must guarantee that bearing strength and the brown coal of drying equipment do not catch fire in drying equipment, and should have explosion-proof safety devices.

Heat carrier directly passes in the spiral heat transfer sheet 31 of rotation, and brown coal add in one-level drier host machine 10 and secondary drying machine host 20 continuously from charging aperture 60, by spiral heat transfer sheet 31, are delivered to discharging opening 70 and are discharged outside machine.Material is in heat exchange, course of conveying, through spiral heat transfer sheet 31, constantly stir, brown coal are always in the on dry run that completes, brown coal are contacted with body spiral heat transfer sheet 31 fully, enter the brown coal of drying machine through bringing-up section, brown coal, from normal temperature to this process of water evaporating temperature, complete in a short period of time, the temperature of axle 30 and spiral heating sheet 31 must keep enough steam pressures always, so just can the thermal efficiency be mentioned the highest.

Axle 30 of the present utility model is all that companion's heat directly contacts with brown coal with spiral heat transfer sheet 31, and heat carrier directly enters in body chuck and in the hollow shaft of rotation, and the heat transfer area of unit volume is large, and the thermal efficiency is high.

Claims

1. brown coal drying machine, it is characterized in that, comprise one-level drier host machine (10) and secondary drying machine host (20), firsts and seconds drier host machine is equipped with respectively axle (30) on (10,20), spiral heat transfer sheet (31) for conducting heat and carrying is housed on axle (30), on firsts and seconds drier host machine (10,20), be respectively equipped with charging aperture (60) and discharging opening (70), the discharging opening (70) on one-level drier host machine (10) is connected with the charging aperture (60) on secondary drying machine host (20).

2. brown coal drying machine as claimed in claim 1, it is characterized in that, described axle (30) is through one-level drier host machine (10) and secondary drying machine host (20), one end of axle (30) is supported by bearing block (40), and the other end drives rotation by motor (50) by reduction gearing mechanism.

3. brown coal drying machine as claimed in claim 2, is characterized in that, is respectively equipped with weep hole (80), steam inlet (91) on described one-level drier host machine (10) and secondary drying machine host (20), and condensation-water drain (92).